My sim in my phone says no service

[Rachel19]

iPhone 8 but I changed my tariff to unlimited everything but telling me there is no service can you help me please.

[Cleoriff]

@Rachel19 

Have you rebooted the phone since your tariff change?

Take the sim out, gently clean it and reinsert.

If you were sent a new sim then you need to do a sim swap Guide: Sim Swap: a mini guide 2017 update 

If none of this works then you'll need to borrow a phone, use a landline or Skype to call O2. All numbers are in this guide Guide: Coronavirus Community Help and Support 

[Rachel19]

How do I reboot my phone and will I get a new sim for my phone

[Cleoriff]

@Rachel19 

Reboot is simply turning it off and back on again.

If you need a new sim you have to call O2 on the numbers in the guide above.

[Rachel19]

Ok that’s fine